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Merge pull request #20149 from keen-wolf/timezone_about

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fix toMinute function to handle special timezone
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alexey-milovidov 2021-02-28 21:53:51 +03:00 committed by GitHub
commit 3bd180c416
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5 changed files with 64 additions and 47 deletions
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10
base/common/DateLUTImpl.h
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@ -322,8 +322,14 @@ public:
if (offset_is_whole_number_of_hours_everytime)
return (UInt32(t) / 60) % 60;
UInt32 date = find(t).date;
return (UInt32(t) - date) / 60 % 60;
/// To consider the DST changing situation within this day.
/// also make the special timezones with no whole hour offset such as 'Australia/Lord_Howe' been taken into account
DayNum index = findIndex(t);
UInt32 res = t - lut[index].date;
if (lut[index].amount_of_offset_change != 0 && t >= lut[index].date + lut[index].time_at_offset_change)
res += lut[index].amount_of_offset_change;
return res / 60 % 60;
}
inline time_t toStartOfMinute(time_t t) const { return t / 60 * 60; }

24
tests/queries/0_stateless/01698_fix_toMinute.reference Normal file
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@ -0,0 +1,24 @@
Check the bug causing situation: the special Australia/Lord_Howe time zone. toDateTime and toString functions are all tested at once
1554559200 2019-04-07 01:00:00 2019-04-07 01:00:00
1554559800 2019-04-07 01:10:00 2019-04-07 01:10:00
1554560400 2019-04-07 01:20:00 2019-04-07 01:20:00
1554561000 2019-04-07 01:30:00 2019-04-07 01:30:00
1554561600 2019-04-07 01:40:00 2019-04-07 01:40:00
1554562200 2019-04-07 01:50:00 2019-04-07 01:50:00
1554562800 2019-04-07 01:30:00 2019-04-07 01:30:00
1554563400 2019-04-07 01:40:00 2019-04-07 01:40:00
1554564000 2019-04-07 01:50:00 2019-04-07 01:50:00
1554564600 2019-04-07 02:00:00 2019-04-07 02:00:00
1554565200 2019-04-07 02:10:00 2019-04-07 02:10:00
1554565800 2019-04-07 02:20:00 2019-04-07 02:20:00
1554566400 2019-04-07 02:30:00 2019-04-07 02:30:00
1554567000 2019-04-07 02:40:00 2019-04-07 02:40:00
1554567600 2019-04-07 02:50:00 2019-04-07 02:50:00
1554568200 2019-04-07 03:00:00 2019-04-07 03:00:00
1554568800 2019-04-07 03:10:00 2019-04-07 03:10:00
1554569400 2019-04-07 03:20:00 2019-04-07 03:20:00
1554570000 2019-04-07 03:30:00 2019-04-07 03:30:00
1554570600 2019-04-07 03:40:00 2019-04-07 03:40:00
4 days test in batch comparing with manually computation result for Europe/Moscow whose timezone epoc is of whole hour:
4 days test in batch comparing with manually computation result for Asia/Tehran whose timezone epoc is of half hour:
4 days test in batch comparing with manually computation result for Australia/Lord_Howe whose timezone epoc is of half hour and also its DST offset is half hour:

16
tests/queries/0_stateless/01698_fix_toMinute.sql Normal file
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@ -0,0 +1,16 @@
/* toDateTime or toString or other functions which should call the toMinute() function will all meet this bug. tests below will verify the toDateTime and toString. */
SELECT 'Check the bug causing situation: the special Australia/Lord_Howe time zone. toDateTime and toString functions are all tested at once';
SELECT toUnixTimestamp(x) as tt, (toDateTime('2019-04-07 01:00:00', 'Australia/Lord_Howe') + INTERVAL number * 600 SECOND) AS x, toString(x) as xx FROM numbers(20);
/* The Batch Part. Test period is whole 4 days*/
SELECT '4 days test in batch comparing with manually computation result for Europe/Moscow whose timezone epoc is of whole hour:';
SELECT toUnixTimestamp(x) as tt, (toDateTime('1981-04-01 00:00:00', 'Europe/Moscow') + INTERVAL number * 600 SECOND) AS x, timezoneOffset(x) as res,(toDateTime(toString(x), 'UTC') - x ) AS calc FROM numbers(576) where res != calc;
SELECT toUnixTimestamp(x) as tt, (toDateTime('1981-09-30 00:00:00', 'Europe/Moscow') + INTERVAL number * 600 SECOND) AS x, timezoneOffset(x) as res,(toDateTime(toString(x), 'UTC') - x ) AS calc FROM numbers(576) where res != calc;
SELECT '4 days test in batch comparing with manually computation result for Asia/Tehran whose timezone epoc is of half hour:';
SELECT toUnixTimestamp(x) as tt, (toDateTime('2020-03-21 00:00:00', 'Asia/Tehran') + INTERVAL number * 600 SECOND) AS x, timezoneOffset(x) as res,(toDateTime(toString(x), 'UTC') - x ) AS calc FROM numbers(576) where res != calc;
SELECT toUnixTimestamp(x) as tt, (toDateTime('2020-09-20 00:00:00', 'Asia/Tehran') + INTERVAL number * 600 SECOND) AS x, timezoneOffset(x) as res,(toDateTime(toString(x), 'UTC') - x ) AS calc FROM numbers(576) where res != calc;
SELECT '4 days test in batch comparing with manually computation result for Australia/Lord_Howe whose timezone epoc is of half hour and also its DST offset is half hour:';
SELECT toUnixTimestamp(x) as tt, (toDateTime('2020-10-04 01:40:00', 'Australia/Lord_Howe') + INTERVAL number * 600 SECOND) AS x, timezoneOffset(x) as res,(toDateTime(toString(x), 'UTC') - x ) AS calc FROM numbers(576) where res != calc;
SELECT toUnixTimestamp(x) as tt, (toDateTime('2019-04-07 01:00:00', 'Australia/Lord_Howe') + INTERVAL number * 600 SECOND) AS x, timezoneOffset(x) as res,(toDateTime(toString(x), 'UTC') - x ) AS calc FROM numbers(576) where res != calc;

58
tests/queries/0_stateless/01699_timezoneOffset.reference
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@ -50,57 +50,29 @@ DST boundary test for Australia/Lord_Howe. This is a special timezone with DST o
DST boundary test for Australia/Lord_Howe:
0 2020-10-04 01:40:00 37800 1601737800
1 2020-10-04 01:50:00 37800 1601738400
2 2020-10-04 02:00:00 39600 1601739000
3 2020-10-04 02:10:00 39600 1601739600
2 2020-10-04 02:30:00 39600 1601739000
3 2020-10-04 02:40:00 39600 1601739600
0 2019-04-07 01:00:00 39600 1554559200
1 2019-04-07 01:10:00 39600 1554559800
2 2019-04-07 01:20:00 39600 1554560400
3 2019-04-07 01:30:00 39600 1554561000
4 2019-04-07 01:40:00 39600 1554561600
5 2019-04-07 01:50:00 39600 1554562200
6 2019-04-07 01:00:00 37800 1554562800
7 2019-04-07 01:10:00 37800 1554563400
8 2019-04-07 01:20:00 37800 1554564000
9 2019-04-07 02:30:00 37800 1554564600
10 2019-04-07 02:40:00 37800 1554565200
11 2019-04-07 02:50:00 37800 1554565800
12 2019-04-07 02:00:00 37800 1554566400
13 2019-04-07 02:10:00 37800 1554567000
14 2019-04-07 02:20:00 37800 1554567600
15 2019-04-07 03:30:00 37800 1554568200
16 2019-04-07 03:40:00 37800 1554568800
17 2019-04-07 03:50:00 37800 1554569400
6 2019-04-07 01:30:00 37800 1554562800
7 2019-04-07 01:40:00 37800 1554563400
8 2019-04-07 01:50:00 37800 1554564000
9 2019-04-07 02:00:00 37800 1554564600
10 2019-04-07 02:10:00 37800 1554565200
11 2019-04-07 02:20:00 37800 1554565800
12 2019-04-07 02:30:00 37800 1554566400
13 2019-04-07 02:40:00 37800 1554567000
14 2019-04-07 02:50:00 37800 1554567600
15 2019-04-07 03:00:00 37800 1554568200
16 2019-04-07 03:10:00 37800 1554568800
17 2019-04-07 03:20:00 37800 1554569400
4 days test in batch comparing with manually computation result for Europe/Moscow:
4 days test in batch comparing with manually computation result for Asia/Tehran:
The result maybe wrong for toDateTime processing Australia/Lord_Howe
1601739000 2020-10-04 02:00:00 39600 37800
1601739600 2020-10-04 02:10:00 39600 37800
1601740200 2020-10-04 02:20:00 39600 37800
1601740800 2020-10-04 03:30:00 39600 41400
1601741400 2020-10-04 03:40:00 39600 41400
1601742000 2020-10-04 03:50:00 39600 41400
1601742600 2020-10-04 03:00:00 39600 37800
1601743200 2020-10-04 03:10:00 39600 37800
1601743800 2020-10-04 03:20:00 39600 37800
1601744400 2020-10-04 04:30:00 39600 41400
1601745000 2020-10-04 04:40:00 39600 41400
1601745600 2020-10-04 04:50:00 39600 41400
1601746200 2020-10-04 04:00:00 39600 37800
1601746800 2020-10-04 04:10:00 39600 37800
1601747400 2020-10-04 04:20:00 39600 37800
1601748000 2020-10-04 05:30:00 39600 41400
1554562800 2019-04-07 01:00:00 37800 36000
1554563400 2019-04-07 01:10:00 37800 36000
1554564000 2019-04-07 01:20:00 37800 36000
1554564600 2019-04-07 02:30:00 37800 39600
1554565200 2019-04-07 02:40:00 37800 39600
1554565800 2019-04-07 02:50:00 37800 39600
1554566400 2019-04-07 02:00:00 37800 36000
1554567000 2019-04-07 02:10:00 37800 36000
1554567600 2019-04-07 02:20:00 37800 36000
1554568200 2019-04-07 03:30:00 37800 39600
1554568800 2019-04-07 03:40:00 37800 39600
1554569400 2019-04-07 03:50:00 37800 39600
4 days test in batch comparing with manually computation result for Australia/Lord_Howe
Moscow DST Years:
11 1981-06-01 00:00:00 14400
12 1982-06-01 00:00:00 14400

3
tests/queries/0_stateless/01699_timezoneOffset.sql
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@ -26,8 +26,7 @@ SELECT '4 days test in batch comparing with manually computation result for Asia
SELECT toUnixTimestamp(x) as tt, (toDateTime('2020-03-21 00:00:00', 'Asia/Tehran') + INTERVAL number * 600 SECOND) AS x, timezoneOffset(x) as res,(toDateTime(toString(x), 'UTC') - x ) AS calc FROM numbers(576) where res != calc;
SELECT toUnixTimestamp(x) as tt, (toDateTime('2020-09-20 00:00:00', 'Asia/Tehran') + INTERVAL number * 600 SECOND) AS x, timezoneOffset(x) as res,(toDateTime(toString(x), 'UTC') - x ) AS calc FROM numbers(576) where res != calc;
/* During this test we got unexpected result comes from the toDateTime() function when process the special time zone of 'Australia/Lord_Howe', which may be some kind of bugs. */
SELECT 'The result maybe wrong for toDateTime processing Australia/Lord_Howe';
SELECT '4 days test in batch comparing with manually computation result for Australia/Lord_Howe';
SELECT toUnixTimestamp(x) as tt, (toDateTime('2020-10-04 01:40:00', 'Australia/Lord_Howe') + INTERVAL number * 600 SECOND) AS x, timezoneOffset(x) as res,(toDateTime(toString(x), 'UTC') - x ) AS calc FROM numbers(18) where res != calc;
SELECT toUnixTimestamp(x) as tt, (toDateTime('2019-04-07 01:00:00', 'Australia/Lord_Howe') + INTERVAL number * 600 SECOND) AS x, timezoneOffset(x) as res,(toDateTime(toString(x), 'UTC') - x ) AS calc FROM numbers(18) where res != calc;